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Am J Cardiol. 2018 Oct 15;122(8):1330-1338. doi: 10.1016/j.amjcard.2018.07.011. Epub 2018 Jul 24.

Meta-Analysis and Trial Sequential Analysis Comparing Percutaneous Ventricular Assist Devices Versus Intra-Aortic Balloon Pump During High-Risk Percutaneous Coronary Intervention or Cardiogenic Shock.

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Jacobi Medical Center, Albert Einstein College of Medicine, The Bronx, New York.
Montefiore Einstein Center for Heart & Vascular Care, Albert Einstein College of Medicine, Montefiore Medical Center, The Bronx, New York. Electronic address:
Montefiore Einstein Center for Heart & Vascular Care, Albert Einstein College of Medicine, Montefiore Medical Center, The Bronx, New York.
Division of Interventional Cardiology, New York University, New York City, New York.
Department of Anesthesiology, Mayo Clinic College of Medicine, AZ.
Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
Department of Cell Biology, Universidad de Chile, Santiago, Chile.
The Cochrane Hepato-Biliary Group, Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
Brigham and Women's Hospital Heart & Vascular Center, Harvard Medical School, Boston, MA.


The intra-aortic balloon pump (IABP) and percutaneous ventricular assist devices (pVAD) are commonly used in different clinical scenarios. The goal of this study was to carry out a meta-analysis and Trial Sequential Analysis (TSA) comparing the IABP versus pVAD (TandemHeart and the Impella) during high-risk percutaneous coronary intervention (PCI) or cardiogenic shock (CS). Using PubMed, Cochrane Central Register of Controlled Trials, and EMBASE we searched for randomized clinical trials (RCTs) and nonrandomized studies that compared pVAD versus IABP in patients who underwent high-risk PCI or with CS. We included 5 RCTs and 1 nonrandomized study comparing pVAD versus IABP. Based on the RCTs, we demonstrated no difference in short-term (6 months) (risk ratio [RR] 1.09, 95% confidence interval [CI] 0.79 to 1.52; p = 0.59) or long-term (12 months) (RR 1.00, 95% CI 0.57 to 1.76; p = 1.00) all-cause mortality. The use of pVAD seemed associated with more adverse events (acute kidney injury, limb ischemia, infection, major bleeding, and vascular injury) compared with IABP (RR 1.65, 95% CI 1.14 to 2.39; p = 0.008) but this was not supported by TSA (random-effects RR 1.66, 95% CI 0.89 to 3.09; p = 0.11; TSA-adjusted CI 0.13 to 21.3). In conclusion there were no differences in short or long-term mortality when using IABP versus pVAD for high-risk PCI or CS. IABP showed superiority over pVAD in terms of risk of harm. However, further RCTs are needed to establish more conclusively the role of these modalities of mechanical circulatory support during high-risk PCI or CS.

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